Negative pressure pulmonary edema due to upper airway obstruction after general anesthesia in a patient with Parkinson’s disease: a case report

A 65-year-old man with Parkinson’s disease (PD) underwent spine surgery under general anesthesia, 13 hours after the last medication for PD. Postoperatively, negative pressure pulmonary edema developed following upper airway obstruction, a possible complication of PD. Oxygenation improved with high-flow nasal cannula therapy. Continued medication might have prevented such complications.